SignalPipe is an agentic sales pipeline that monitors Reddit, Hacker News, and RSS feeds 24/7 for buying-intent signals. It uses AI to score each signal, draft a reply, and surface only real leads for human review and approval before anything is sent.

How does SignalPipe detect buying intent?

SignalPipe uses a three-stage pipeline: a keyword gate for cheap pre-filtering, OpenAI text-embedding-3-small for semantic similarity scoring against your anchor sentences, and a three-model LLM swarm (Optimist, Analyst, Skeptic) that evaluates each post independently. A hard skeptic veto suppresses any signal the most skeptical judge dismisses.

Does SignalPipe send messages automatically?

No. Every message requires human approval before it is sent. SignalPipe drafts the reply and queues it for your review — you approve, edit, or reject each one. Nothing is sent without your explicit sign-off.

What platforms does SignalPipe monitor?

SignalPipe monitors Reddit (via subreddit RSS feeds), Hacker News (via hnrss.org keyword feeds), and any RSS-compatible feed. You can add as many sources as you want per product.

How is SignalPipe different from Clay or Apollo?

Clay enriches contact lists you already have. Apollo is a cold email database. SignalPipe generates net-new leads by detecting live buying signals — finding people who are actively posting that they need what you sell, right now, in public communities.

SignalPipe offers three tiers: Starter ($49/mo — 3 products, 50 leads/day, 500 prospects), Growth ($149/mo — 10 products, 250 leads/day, 5,000 prospects), and Scale ($399/mo — unlimited everything). The first 100 waitlist members get Starter free for 3 months.

Does SignalPipe work with NVIDIA NeMoClaw?

Yes — fully compatible out of the box. NeMoClaw is NVIDIA's enterprise distribution of OpenClaw, so any OpenClaw plugin installs and runs on NeMoClaw without modification. For on-prem deployments, SignalPipe also supports local model inference: set COMPANION_LLM_PROVIDER=openai_compatible and point it at a locally running Nemotron or any OpenAI-compatible endpoint. Your leads, prospect data, and generated messages never leave your infrastructure.

Can I run SignalPipe fully on-premises?

Yes. Self-host the FastAPI backend on your own server, connect it to your own PostgreSQL database, and configure the companion message generation to use a local model via any OpenAI-compatible endpoint (Nemotron via NeMoClaw, Ollama, LM Studio, vLLM). The only external call that remains is the OpenAI embedding API for signal scoring — and that can be swapped for a local embedding model by request.

Head-to-head comparison

SignalPipe vs Apollo

Apollo.io and SignalPipe represent two fundamentally different sales philosophies. Apollo finds the contact, then you send cold outreach hoping it lands at the right time. SignalPipe waits for the person to signal their need publicly, then helps you respond immediately.

SignalPipe wins

Apollo.io wins

Feature by feature

Feature	SignalPipe	Apollo.io
Lead source	Live intent signals	Cold contact database
Contact database size	N/A	275M+ contacts
Prospect warmth	Warm (expressed need)	Cold (no signal)
Reddit / HN monitoring	✓	✗
Context-aware AI drafting	✓	Templates only
Email sequences	Via AI agent	✓ Native
Human approval workflow	✓ Always	✗ Automated
Spam/deliverability risk	None	High at volume

Verdict

Apollo is the right choice for large sales teams running high-volume cold outreach at scale. SignalPipe is the right choice for founders, small teams, and anyone who wants warm leads — people actively expressing a need — without the cold email spam game.

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